Questions 78 -85 are based on the following: A researcher was interested in disc
ID: 3183341 • Letter: Q
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Questions 78 -85 are based on the following: A researcher was interested in discovering whether attitude changes can be more effectively brought about when persons are made to feel part of the decision making process. A group of women was selected and randomly assigned to one of two groups, one group being placed in a large lecture hall, and the other in a small discussion-group setting. In the lecture setting, a speaker exhorted the women to use less expensive cuts of meat, whereas in the small-group setting a different group leader, although raising the same issues as the lecture had, also encouraged the subjects to participate in the discussion and offer suggestions. Several weeks later both groups of women were checked at home to determine whether they were indeed using the meat cuts which had been urged. Only 3% of the lecture group members had the meat cuts, whereas 32% of the discussion group members had the meat cuts. The difference was clearly significant.
78. The research method involved was a. post-facto b. longitudinal c. experimental d. designed to eliminate any possibility of alpha error
79. The design of the study was a. between-subjects b. repeated-measures c. matched-subjects d. none of these
80. Whether the women were subjected to the lecture method or the group discussion method, defined the a. control group b. assigned variable c. dependent variable d. independent variable
81. The independent variable was a. an assigned-subject variable b. manipulated c. held constant d. accounted for by the difference in group variability
82. Whether or not the women later had the meat cuts defined a. the assigned independent variable b. the manipulated independent variable c. the error scores d. the dependent variable
83. The fact that the two groups were led by different persons created the possibility of incurring a. the Type 2 error b. the halo effect c. the Hawthorne effect d. confounding variables
84. The fact that the two groups differed significantly regarding whether or not they had the meat cuts, means that a. Ho was accepted b. Ho was never tested c. Ho was rejected d. the dependent variable was not affected
85. When the degrees of freedom reach infinity, the t distribution a. becomes identical with the distribution of raw scores b. gets larger c. approximates normality d. cannot be obtained
Explanation / Answer
78. It's an experimental research study
79. the design of the study was beween subjects.
80. Control group
81. The independent variable was (d.) accounted for by the difference in group variability
82. d. the dependent variable
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